Extron electronics TPR101 Operations Instructions download pdf (Page 14)

External Controls

The TPR101 features several controls for optimizing image quality. The location of the front and

rear panel controls is illustrated in the TPR101 Control and Connectors Diagram on page 13.

1. Before making any other adjustments, set the RGB skew controls to minimum position

(fully counter-clockwise position) using the IN9339 adjustment tool provided.

2. Adjust the Low Frequency cable equalization control to eliminate visible image smear.

3. Adjust the High Frequency cable equalization to provide a sharp image with good detail.

4. If misconvergence occurs on the display (red, green or blue are not aligned properly), use

the IN9339 adjustment tool provided to adjust the RGB skew controls to compensate for

RGB delays occurring in the CAT5 cable.

TPR101 FRONT PANEL CONTROLS

The SELECT Button on the front panel allows users to toggle between the high and low frequency controls

(the front panel LED’s will illuminate accordingly to indicate the current mode). After selecting HIGH

FREQ or LOW FREQ, use the CABLE EQ Adjustment Control to increase or decrease the equalization.

Press on the right side of the control to increase the cable EQ compensation; press on the left side of the

control to decrease the cable EQ compensation.

Low Frequency Control - boosts the midrange frequencies that tend to diminish over long cable runs.

This signal loss results in a smearing effect to the right hand side of letters or lines. The factory default

setting is minimum cable EQ.

Hint: While making this adjustment, it may be helpful to create a screen with a white background and tall,

black vertical lines. Adjust the low frequency control until the smear (darkness) to the right of letters or

lines is minimized. Over-adjustment (too much equalization) will cause a negative smear (brightness).

High Frequency Control - is used to maximize the sharpness of small details. Like the low frequency

control, the high frequency control also provides image enhancement for high-resolution video signals by

increasing clarity and edge detail (again, to compensate for signal loss during long cable runs).

Hint: While making the adjustment, use words / letters as your point of reference.

Increasing the high frequency level will minimize the negative images / highlights that appear before the

letters. Negative images / highlights that appear after the letters indicate overpeaking. Pressing the 

button will increase the high frequency, and pressing the  button will decrease it. The high frequency

adjustment range is 0 in the minimum position, and 61 in the maximum position. The factory default

setting is minimum.

TPR101 REAR PANEL CONTROLS

Skew Adjustment - Three Skew Adjustment pots are located on the rear of the receiver. These

adjustments allow users to individually increase or decrease each color’s relative timing. Use the IN9339

Adjustment Tool (included) to gently adjust the skew control pots. Since each control has an adjustment

range of only ¾ of a turn, users must take care not to force the control beyond the end of the adjustment

range. Turn the red, green and / or blue adjustment pots clockwise to increase the delay, and

counterclockwise to decrease it. For example, if the leading edge of a large black-to-white transition on the

display screen is red, adjust the red pot until the inappropriate color is gone. The factory default setting is

minimum.

For best results you should adjust the TPR101 cable equalization controls

and RGB skew controls in the following order. If necessary, you may

repeat steps 2 - 4 again to fine tune the image after the initial adjustment.

1 2 ... 9 10 11 12 13 14 15 16 17 18 19 ... 23 24

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Extron electronics TPR101 Operations Instructions Page 14

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